[CCoE Notice] Mechanical Engineering Masters Thesis Defense, June 18th at 10:00 am

[Khator, Suresh]

Dear College of Engineering Faculty:

 

Ashley Higgins will be defending her Masters Thesis on Friday, June 18th at 10:00 am in Mechanical Engineering Large Conference Room.  Please encourage your graduate/senior students to attend her defense if they are working in a similar area.

 

Suresh Khator

 

 

Abstract

An analysis of high-speed images of two-phase flow inside an adiabatic multipli-connected microchannel array was performed. Bubble growth rates, heat flux into bubbles, and observations of void fraction are analyzed and reported.  The test section was a silicon micro-array consisting of a series of interconnected 50µm x 50µm channels, and the working fluid was R-11.  The chip was heated using a resistive heater, and the flow was observed through a glass upper surface at 5000 fps.  Flow rates varied from 6.2  to 24.7 mg/s, and power to the fluid varied from 30 to 780 mW.  Heat transfer rates into the bubbles ranged from 0.007 to 9.15 mW with heat flux magnitudes from 0.02 to 6.9 W/cm2.  A Fourier transform analysis of void fraction records showed a strong link between the dominant frequency observed in downstream vapor motion and the bubble departure frequency at isolated upstream nucleation sites.

Committee Members: Dr. D. Keith Hollingsworth, Dr. Larry C. Witte, Dr. Paul Ruchhoeft and Dr. Dong Liu

 

_______________________________________________________

Suresh K. Khator, Ph.D., P.E.                         Phone: 713-743-4205         

Associate Dean, College of Engineering    Fax: 713-743-4214

University of Houston                                     Email: skhator at uh.edu   

E421 Engineering Bldg 2                                www.egr.uh.edu/ie

Houston, TX 77204-4008

 

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